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Re: 292 exhaust manifolds
Quote:
Originally Posted by Furno68C20
I’m currently swapping a 292 in place of a 250. 68 Truck originally had a 250. The 292 I have has a 3” 3 bolt triangular exhaust manifold flange. This causing a problem since the truck has a 2” 2 bolt flange.
From the research I’ve done I should be able to use a 250 exhaust man that will fit a 292 head and then mate to the OEM exhaust.
Did the 292 come with different exhaust manifolds based on what size the truck was? C10/2030 - 2” manifolds: c50/60 3” manifolds?
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Be aware that you are probably going to have to redo the head pipe anyway. Since the 292 block is 1 3/4 inches taller the exhaust is going to hit the frame crossmember before the flange comes up high enough to bolt up. That's what happened on my swap.
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67 C10 283 T5 swapped longbed fleetside = wife's daily driver
67 C20 292 (originally a 250)4speed longbed fleetside w/original wooden bed=my project truck
67 C10 283+.060 (so a 292 as well)T5 swapped longbed fleetside=my DD
72 C1500 Sierra Grande 350 TH350 longbed fleetside=wife's fair weather truck
Can you tell we are fans of longbed fleetsides & 67s
Chris
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